Remove, disassemble and degrease. Examine the threads on the upright and trunnion.Place the outer portion and check for any play. Any wear, replace. Obviously if the thread on the upright is worn, this will require replacement. Replacements are available with poly bushes which are far better. Remember they are handed. Make sure the eyebolt is assembled anti -seize (Removal can be a problem if it was assemble without any last time!). Reassemble with EP 90 or grease (your choice, do a search, loads on this argument) Malcolm